math
...and it's still a great game.
About 2 years ago, my (then) 11-year-old niece always said of her math abilities, 'I stink at math.' I gave her KRYPTO, which she plays with her father....
In 1999, I asked a question in sci.math :
''Is it possible to continuously deform a rectangle in space isometrically in such a way that the end result (the crumpled sheet of paper) fits ...
What's the fastest way to:
1) Add the consecutive whole num from 1 to 97. What're the last 2 digits?
2) What about the product of 1 to 97? What're the last 2 digits?
...n analytic geometry puzzle, but that might've scared you from reading this
This might be the mathematical version of the gry puzzle, but here goes.
Construct a shape such that For every...
No, no, a thousand times no!
Robert Israel isr...@math.ubc.ca Department of Mathematics http://www.math.ubc .ca/~israel University of British Columbia Vancouver, BC, Canada
[Cross-posted to sci.math and sci.logic because this is about math & logic as well...]
Hello all,
For some time, I've been working on puzzles from books by Raymond Smullyan (The Lady ...
Does anyone have puzzles about 2001? Trivia, math, whatever.
...can be expressed as the sum of 5 integers cubed.
(This problem was part of a national undergraduate math contest when I was an undergraduate.)
Instead, let p/q be any rational number, and expr...
... 'N' is used. If 'N-1' is used, the bias disappears. But : I've never seen the math, and I question whether this is true for any : sample size.
If the sampling is done wit...
...mple 'trick' to solve this problem without doing any integrals. Anyone have any idea?
The math-intensive answer is here:...
Your math seems fine. Have you kept track of what years they pick? Maybe they know that mostly teanagers listen to the station, and they only let centenarians win! If I were running this contest, I�...
...t, but thanks to Mike Myers I think we can also add 'farklemt' to the list.
Department of Mathematics http://www.math.ubc .ca/~israel University of British Columbia Vancouver, BC, Canad...
...#039;t suppose this is much of a spoiler, so I'll avoid the spoiler space. Check out your friendly math textbook (or your friendly search engine) for something called 'Benford's Law...
..., 5, 7, 4, 2, 2, 6, 1
Identify the sequence.
The above sequence has 26 terms, hint hint.
No math beyond counting required.
This one should be solved quickly.......
20 mathces __ __ __
lllllll
lllllll
__ __ __
arranged like that but all connected
move 1 math to make 4 squares
logic puzzles math puzzles lateral-thinking puzzles (aka situation puzzles) crossword puzzles jigsaw puzzles word puzzles riddles word equations (ex. 26=L o t A) mechanical puzzles (Rubik's cube,...
Here are a few samples of matchstick equation problems I designed for my math class. The rules of the game are: 1) You must use all the matchsticks 2) You can't break, bend, etc. any matchstick 3...
...has a winning strategy. See A. W. Hales and R. I. Jewett, Regularity and positional games, Trans. Amer. Math. Soc. 106 (1963), 222-229, or the book _Ramsey Theory_ by Graham, Rothschild, and Spencer....
... know of any 6-letter examples in English, though there may very well be one.
Mike Keith Word play, math, music:...
...uzzles and have learned a few things about how to work them. I also recently picked up an issue of Dell Math Puzzles and Logic Problems. In addition to the Logic Problems the most numerous puzzles see...
...he future, you might consider renumbering your letters so that A=0,...,Z=25. That makes it easier to do math because you can use mod 26 and not have to adjust things. For instance, you can compute (c2...
...he behavior of holes and electrons in the presence of a field) in more concrete terms than the abstract math of my text book. Perhaps your absent train car will assist that endeavor.
Thanks for a ...
Wouldn't this be more appropriate on sci.math?
The base 10 logarithm of 4 is irrational (if it were say, p/q, then 10^p would equal 4^q for integers p,q > 0; that's impossible). sqrt(...
... the current childbearing generation is larger than the generation that is dying off.
Department of Mathematics http://www.math.ubc .ca/~israel University of British Columbia Vancouver, BC, Canad...
...ssarm .htm: http://pax.st.usm.edu/cmi/inform_html/glossary .html: http://br.crashed .net/~akrowne/crc/math/c/c018.htm:
Caliban puzzle A logic puzzle in which one is asked to infer one or more fa...
...ifference between these squares is n^2*4ab(a^2-b^2).
Setting this equal to 100 and doing some basic math yields sqrt[ab(a+b)(a-b)]=5/n where 5/n is rational and a and b are integers. If there are ...
It is logically impossible to prove this. A great many experiments have been done, and all that it is possible to say is that there has been no evidence that the velocity of light changes. (We will ig...
I may be missing something, but it's not that obvious to me. I hate to get all math-y, but abstracting out the details of divisor nim in question 3, we have...
Two players, P1 and P2, select ...
Wed, 24 Jan 2001 01:28:16 GMT rec.puzzles Carl G.: What is the fewest number of pieces that you would need in order to use them to create the silhouette of a square, an equilateral triangle, and a cir...
***** [SPOILER on “follow-up” problem is at end of this posting.]
The well-known solution is to pass on the first 100/e (37) daughters and then select the next dowry (if any) that is the highe...
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